public function rules()
{
// NOTE: you should only define rules for those attributes that
// will receive user inputs.
return array(array('event_id, eye_id, left_central_area_id, left_max_area_id, left_height_id, left_vasc_id,
right_central_area_id, right_max_area_id, right_height_id, right_vasc_id', 'safe'), array('left_central_area_id, left_max_area_id, left_height_id, left_vasc_id', 'requiredIfSide', 'side' => 'left'), array('right_central_area_id, right_max_area_id, right_height_id, right_vasc_id', 'requiredIfSide', 'side' => 'right'), array('event_id, eye_id, left_central_area_id, left_max_area_id, left_height_id, left_vasc_id,
right_central_area_id, right_max_area_id, right_height_id, right_vasc_id', 'safe', 'on' => 'search'));
}